Box structure



M, 1929. H. B. SMITH 1,712,970

' BOX STRUCTURE Original Filed Dec. 51, 1920 Patented May 14, 1929.

UNITED STATES PATENT OFFICE.

HARRY BRIDGMAN SMITH, OF BROOKLYN, NEW YORK, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO HOAGUE-SPRAGUE CORPORATION, OF LYNN, MASSACHUSETTS, A

CORPORATION OF MASSACHUSETTS.

BOX STRUCTURE.

Application filed December 31, 1920, Serial No. 434,314. Renewed September 24, 1926.

My invention relates to covered boxes of paper or other materials which may be associated and formed in similar ways, characterized principally by the provision of the central or body portion of the blank or box with wings and wing extensions composed of shell material and overlying cover material, and so constructed or arranged that in the completed box the inturned wing extensions 111 provide for concealing, by the overlying cover material, certain of the raw shell edges which would otherwise be exposed. Such exposed shell edges are unsightly and ob ect-ionable for many classes of boxes and the inw vention provides for eliminating this objectionable. feature in a simple and economical way.

The wing extensions also produce a very strong box structure and especially one which E is strongly reenforced at andnear the wall corners.

The box .is most conveniently produced from a box-blank assembly comprising a sheet of shell material and a sheet of cover mi material adhesively secured together. with side-wing margins of the cover turned over upon and adhesively secured to upper margins of the shell side-wings, the assembly being formed with the side wings mentioned, end (or corner) laps. end wings. and end wing laps, (all as explained in the following detail description), each of these assemblyblanlr members, in addition to the body-portion of the assembly, usually including portions of both the shell and cover materials.

The principal objects of the invention are to provide a box adaptable to a great variety of uses for which covered boxes are required, and at the same time to provide a box structure which is relatively inexpensive. both by reason of its structure and because it is adapted for economical methods of production.

The characteristics and advantages of the invention are further sutiiciently explained hereinafter, in connection with a detail description of the accompanying drawing, which shows certain exemplifying embodiments of the invention. After considering these, persons skilled in the art will understand that many variations may be made within the principles of the inventionfand I contemplate the employment of any structures which are properly within thescope of the appended claims Figure 1 is a. perspective view of a boxblank assembly.

Figure 2 shows the assembly side-wings folded up.

Figure 3 shows the end laps turned in.

Figure 4 shows the end wings bent up.

Figure 5 shows a completed box.

Figure 6 is a perspective view of one end of a modified blank-assembly.

Figure 7 is a detail. showing a step in the shaping of the modified assembly into box form.

Figure 8 shows one corner of a box produced from the modified assembly.

The box-blank assembly shown in Figure 1 may be produced by a Variety of preliminary steps. It is composed of a sheet S of shell material. usually cardboard of suitable thickness, and an underlying-sheet C of'covering material, usually paper thinner than the shell material, and of suitable quality and finish for boxes of the desired grade. These sheets are secured together, usually by adhesive applied between certain portions, or the entire areas. of their engaging faces. Preferably marginal portionslO of the cover are turned over and adhesively secured upon upper sur faces of the shell, thus providing in the pres ent embodiment. a covering for the outward edges of the shell side wings.

The blank-assembly is shaped to provide a body portion 11, side wings 12. end wings 13 with extensions 14, and end. (or corner) laps 15. each of these blank portions comprising. most conveniently, portions of both the shell and the cover sheets. Desirably the upper (inner) surface. of the blank-assembly cousist-ing mainly of theuppersurface of the shell) is creased or scored along the lines 16. to facilitate subsequent bending, and cuts 17 are made throughboth sheets to separate the inner side edges of the end laps from adja-' cent portions of the end" wings. The surfaces 18 of the end wing extensions are coated with adhesive, and adhesive is also applied to the outer surfaces 19 of the end laps. these adhesive applications being made at any convenient time in the formation of the blankassembly, or before or during the shaping of the assembly into box-form.

The side wings 12 are now bent up. as shown in Figure 2; the end laps 15 are then turned in, as shown inFigure3 ;,the endwings are then turned up, and pressed against the adhesive outer surfaces 19 of the end laps, as shown in Figure 4, and the upstanding end wing extensions 14 are then turned in andshell, except the edges of the shell end wings,-

which are more or less exposed, as indicated at 6, Figure 5.

One end of a modified blank-assembly 1s shown in Figurefi, in which the side-scor1ngs 16 are extended along the lines 20, and cuts to separate the end laps are made along dragonal lines 22, producing end laps 21 havlng narrow outer ends, and end-Wing-laps 23 connected with the ends of the end -wings 13 along the fold-lines 20. Adhesive is applied a to the upper faces of the end-wing-laps, as

shown. At a suitablestage of the shaping of the blank, conveniently after the end laps 21 are turned in, as shown in Figure 7, the

end-wing-laps 23 are folded over along the fold lines 20, upon adjacent inner surfaces of the end wings, and their adhesive surfaces pressed in engagement with the end wings; and when the end Wings are subsequently turned up, the laps 123 are concealed under the end wings, as indicated in dotted lines in Figure 8; the end-wing extensions 14 are turned in and secured as in the structure firstdescrib'ed-.- The edges of the shell material which are exposed at e, in the previouslydescribed'structure, are in the present case concealed by the infolded cover paper along the lines 7, Figure 8; and no part of the shell material is. exteriorly exposed except very short portions g at the bent-over edges of the end wing extensions, ad acent to the side-edges; and these minute portions of the shell are practically unnoticeable, except upon very careful inspection of the box.

Covered boxes constructed in accordance with my invention meet a very large demand for boxes of this class, and are more cheaply and rapidlyproduced than other styles of covered-box construction.

The words side and end as here used, have a relative, rather than a limiting significance, since evidently if the length of the box sides [is reduced, and the length of the ends increased to a certain extent, the sides will appear to be ends,and vice-versa. Similarly, the end or corner laps might extend from the end wings instead of the side wings,

andthe extensions 14 or the laps 23 might {-be connected with the side'wings.

I claim:

1. A covered-box, composed of a sheet of ll material and a sheet of cover material, (1 having a body portion, sides and ends, dseompris'ing inturned endlaps, end

wings lying outside the end laps, end-wing extensions overlying the inner faces of the end laps, and end-wing laps connected to sideedges of the end wings and inturned between parts of the end wings and the adjacent end laps, thusproviding that said side-edges of the shell endwings are concealed by overlying cover material.

2. A covered box, consisting of associated sheets of shell and cover material and including a body portion, side and end wings, end wing extensions, end laps and end wing laps, each ofsaid component parts including portions of the shell and overlying cover materials, the end laps being secured between the end wings and the end wing extensions and the end wing laps ,being inturned between the end wings and adjacent surfaces of the end laps.

3. A box-blank assembly consisting of sub stantially coextensive blanks of shell and cover" material adhesively connected, and comprising a body portion, side and end wings, end wing extensions, end-wing laps extending from side-edges of the end wings, and end laps extending from the side wings, said end wing laps being arranged, when the blank is folded to box form, to be inturned against inner faces of the end wings and thus to provide for covering and concealment of side -edges'ifthe shell end wings by overlying cover material.

4. A covered box formed of two approximately similarly-shaped blanks, one of shell and the other of covermaterial, each blank having portions which jointly compose a box body, side wings, end wings, end-wing ex-' tensions, end-wing laps, and end laps extending from the side wings, the end laps being enclosed between the end wings and the inturned end-wing extensions, and the end- Wing laps being inturned and secured between the end wings and the end laps, thus providing that said side-edges of the shell end wings are concealed by overlying cover material.

5. A covered box formed of two approximately similarly-shaped blanks, one of shell and the other of cover material, each blank having portions which jointly compose a box body, side wings, end wings, end-wing extensions, end-win laps, and end laps ex tending from the side wings, the end laps being enclosed and adhesively secured 'between the end wings and the inturned end wing extensions, and the end-wing laps being inturned and secured between the end wings and the end laps, thus providing that said side-edges of the shell end wings are concealed by overlying cover material.

Signed at New York city, in the county of New York and State of New York this 21st- 

